There’s very little storage cost as the fuel can be burned til there is nothing radioactive left.
Nuclear doesn’t produce radioactive materials it reduces radioactivity. If you mix the spent fuel from a heavy water reactor back into the ore, it’s radioactivity will have been reduced.
While you can burn the fuel until very few long-lived isotopes are left we don't do that currently. Nuclear reactors also turn relatively harmless Uranium into much more active elements. Just mixing the waste back into the rocks you got the Uranium from is not a safe storage method.
We don't do that currently because there hasn't been a new plant built in 50 years and the designs of the old plants were specifically engineered to make materials for nuclear weapons.
If there wasn't a huge stigma against nuclear energy they would be making advancements, but nobody is going to fund advancements while there is no guarantee they will be allowed to apply them.
What would happen to the JavaScript language if every year half of congress gave speeches condemning JavaScript and calling for a prohibition against any new JavaScript code? How many new people would bother learning JavaScript.
Nuclear doesn’t produce radioactive materials it reduces radioactivity. If you mix the spent fuel from a heavy water reactor back into the ore, it’s radioactivity will have been reduced.